---
title: "NorCal Auto Inc — Clean Truck Check, Chico, CA | CTC Finder"
description: "NorCal Auto Inc in Chico, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing, motorhome testing. Phone, address and nearby…"
url: "https://ctcfinder.com/tester/norcal-auto-inc-chico/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# NorCal Auto Inc

Clean Truck Check tester in Chico, CA (Butte County).

> CTC Finder is an independent directory, not affiliated with CARB. Tester data: CARB Clean Truck Check public tester list, last checked November 1, 2026. Confirm services, hours and prices with the tester.

| Field | Value |
|---|---|
| Location | 225 Sellers Way, Chico, CA 95928 |
| County | Butte County |
| Phone | (530) 966-0975 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | No |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks NorCal Auto Inc can test

| Your vehicle | Test required | This tester |
|---|---|---|
| Diesel, model year 2013 or newer | OBD scan | Yes |
| Alternative fuel (natural gas, propane), 2018 or newer | OBD scan | Yes |
| Diesel, model year 2012 or older (no OBD) | Smoke opacity test (SAE J1667) plus visual inspection | Not listed |
| California-registered motorhome | Same test as above by engine year, once a year | Yes |

For a 2012 or older diesel, the nearest listed tester with smoke opacity testing is Peterson Cat in Chico, about 1 mile away. [See listing](https://ctcfinder.com/tester/peterson-cat-chico/).

## Clean Truck Check testers in Butte County

NorCal Auto Inc is one of 24 testing businesses in Butte County on CARB's public tester list. 20 of them offer mobile testing and 8 do smoke opacity tests. In Chico itself there are 10 listed businesses, 9 of them mobile.

## When your truck is due

Most trucks test twice a year, on a schedule tied to the DMV registration expiration date. CARB says OBD trucks move to four tests a year beginning October 2027. California-registered (non-commercial) motorhomes and agricultural vehicles test once a year. See the [deadline guide](https://ctcfinder.com/guide/deadlines-2026-2027/). You can test up to 90 days before a deadline. Free email reminders: https://ctcfinder.com/reminders/

## Frequently asked questions

### Does NorCal Auto Inc offer mobile Clean Truck Check testing?

Yes. NorCal Auto Inc says on CARB's tester list that it offers mobile testing, so it can come to your yard or job site. Ask about a trip fee when you call.

### Can NorCal Auto Inc test a 2012 or older diesel truck?

NorCal Auto Inc does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [Peterson Cat](https://ctcfinder.com/tester/peterson-cat-chico/) (about 1 mile). Trucks from 2013 on get an OBD scan instead.

### How much does NorCal Auto Inc charge for a Clean Truck Check?

NorCal Auto Inc has not published prices with us; call (530) 966-0975 for a quote. Published California prices are usually $50–$135 per vehicle for an OBD test and $190–$200 for a smoke opacity test, plus CARB's annual fee ($32.13 in 2026). See the [cost guide](https://ctcfinder.com/guide/cost/).

### Is NorCal Auto Inc a CARB-credentialed tester?

NorCal Auto Inc appears on CARB's public Clean Truck Check tester list, last checked November 1, 2026. Only credentialed testers can submit results to CARB; after the test, confirm the passing result shows for your vehicle in CTC-VIS.

## Other testers nearby

- **[Arvonen Construction Tester](https://ctcfinder.com/tester/arvonen-construction-tester-chico/)** — 327 Entler Ave, Chico, CA 95928 — (530) 624-2231 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[C & C Utility Inc.](https://ctcfinder.com/tester/c-and-c-utility-inc-chico/)** — 632 Entler Ave, Chico, CA 95928 — (530) 282-7621 — 1 mi. Services: OBD testing.
- **[E&T Truck Repair](https://ctcfinder.com/tester/e-and-t-truck-repair-chico/)** — 2266 Park Ave, Chico, CA 95928 — (360) 270-1279 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[NorCal Mobile HDTC](https://ctcfinder.com/tester/norcal-mobile-hdtc-chico/)** — Chico, CA 95928 — (530) 415-6087 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Peterson Cat](https://ctcfinder.com/tester/peterson-cat-chico/)** — Chico, CA 95928 — (530) 781-2690 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Mobile CARB Testing](https://ctcfinder.com/tester/mobile-carb-testing-chico/)** — 1413 Spruce Ave, Chico, CA 95926 — (530) 845-2840 — 4 mi. Services: mobile testing, OBD testing, motorhome testing.